Project

#	Title	Team Members	TA	Documents	Sponsor
30	Power Outlet Quality and Submeter System	Nicole Viz Roshan Mahesh Soham Manjrekar	Surya Vasanth	design_document1.pdf design_document2.pdf final_paper1.pdf presentation1.pdf proposal1.pdf proposal2.pdf video1.mov video2.mov
	# Power Outlet Quality and Submeter System Project Team Members: - Nicole Viz (nviz2) - Soham Manjrekar (sohammm2) - Roshan Mahesh (roshanm2) # Problem In the rapidly evolving field of power electronics and energy technologies, maintaining consistent and high-quality power distribution and energy usage is critical for residential and commercial buildings. Using submeters can help create energy savings, lower operating costs, increase building efficiency and reliability, and improve occupant comfort. Devices today have several drawbacks, however. They can be cost-inefficient, complex to operate and to read, and they may lack real-time insights. Additionally, they may not employ sufficient power quality monitoring. These shortcomings can lead to difficulty in meeting recent sustainability efforts, and as such, an innovative solution is needed. # Solution For our project, we’d like to design and construct an improved device that monitors power quality and acts as a submeter to its loads – a device that is cost-effective, has high-fidelity data acquisition, and operates with an intuitive user interface LCD screen. Our project will solve the problems listed above by combining a power quality monitor along with a submeter in a cost-effective manner that stores real-time data and loads the data to a database that can be accessed through a website. More detailed specifications are presented below. We’ve divided our project into the following subsystems: Microcontroller/Software, Sensors and ICs, and Power. Note: We’ve looked into the work of a group who did a similar project last year and discussed some of the issues they faced; portions of this work will hopefully build on that and improve upon them. # Solution Components - Microcontroller/Software 1. ESP-32 or similar - Offers DSP - WiFi and Bluetooth Connectivity - Allows for expansion GPIO to add additional storage - Low power draw 2. SD Card Module - To save data in the event of power loss 3. Google Cloud hosting MySQL database or similar - Any online cheap database management system - Sensors and ICs 1. Voltage Sensing via Voltage Divider 2. Current Transformer (PA1005.070QNL by Pulse Electronics), measures current as well 3. ADE9153A - Single Phase Energy Metering IC 4. ADE9430 - Power Quality Metering IC - Power 1. 5V Li ion Battery (or can investigate other battery options if there are safety concerns with Li ion) 2. 3.3V Linear Regulator (to power PCB with IC’s and microcontroller) # Criterion for Success Our criterion for success is divided up into the following 5 categories: software, operation, power quality measurement, submeter measurement, and miscellaneous. These are our criteria for success: - Software 1. Online database that holds data such as timestamp, voltage, current, power, time of harmonic disturbances/power outages/voltage changes larger than 5% - Upload data to database every 15 minutes using WiFi/bluetooth 2. Displays waveforms of power outlet current and voltage 3. Displays whether or not there’s a power quality issue (for harmonic disturbances/power outages/voltage changes larger than 5%), the type of issue, followed by a notification - Operation 1. Self powering our device for at least 24 hours - Power Quality Measurement 1. Record harmonic disturbances 20 ms before and after 2. Record voltage changes larger than 5%, or power failures 3. Send this data to database when failures/disturbances occur - Submeter Measurement 1. Measure voltage, current, power of electrical load 2. Have an LCD Screen displaying instantaneous voltage, current, power - Miscellaneous / Stretch Goals 1. Keep construction costs as low as reasonably possible 2. Make device lean and visually tidy

Assistive Chessboard

Robert Kaufman, Rushi Patel, William Sun

Assistive Chessboard

Featured Project

Problem: It can be difficult for a new player to learn chess, especially if they have no one to play with. They would have to resort to online guides which can be distracting when playing with a real board. If they have no one to play with, they would again have to resort to online games which just don't have the same feel as real boards.

Proposal: We plan to create an assistive chess board. The board will have the following features:

-The board will be able to suggest a move by lighting up the square of the move-to space and square under the piece to move.

-The board will light up valid moves when a piece is picked up and flash the placed square if it is invalid.

-We will include a chess clock for timed play with stop buttons for players to signal the end of their turn.

-The player(s) will be able to select different standard time set-ups and preferences for the help displayed by the board.

Implementation Details: The board lights will be an RGB LED under each square of the board. Each chess piece will have a magnetic base which can be detected by a magnetic field sensor under each square. Each piece will have a different strength magnet inside it to ID which piece is what (ie. 6 different magnet sizes for the 6 different types of pieces). Black and white pieces will be distinguished by the polarity of the magnets. The strength and polarity will be read by the same magnetic field sensor under each square. The lights will have different colors for the different piece that it is representing as well as for different signals (ie. An invalid move will flash red).

The chess clock will consist of a 7-segment display in the form of (h:mm:ss) and there will be 2 stop buttons, one for each side, to signal when a player’s turn is over. A third button will be featured near the clock to act as a reset button. The combination of the two stop switches and reset button will be used to select the time mode for the clock. Each side of the board will also have a two toggle-able buttons or switches to control whether move help or suggested moves should be enabled on that side of the board. The state of the decision will be shown by a lit or unlit LED light near the relevant switch.

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